Traits Taxon list
Aramazdospirifer orbelianus (Abich, 1858) †
Arpaspirifer latus (Abrahamian, 1974) †
Cyrtospirifer asiaticus Brice, 1970 †
Cyrtospirifer dansikensis Afanasjeva in Alekseeva et al., 2018 †
Cyrtospirifer echinosus Ljaschenko, 1958 †
Cyrtospirifer lonsdalii (Grabau, 1931) †
Cyrtospirifer paridaensis Savage & Baxter, 1995 †
Cyrtospirifer reidi Maxwell, 1950 †
Cyrtospirifer subdisjunctus Maxwell, 1951 †
Nikospirifer praebisinus Gretchishnikova, 1996 †
Pripyatispirifer belorussicus (Ljaschenko, 1959) †
Pripyatispirifer caucasius Afanasjeva in Alekseeva et al., 2018 †
Sphenospira dansikensis Gretchishnikova in Alekseeva et al., 2018 †
Tenticospirifer wadleighensis Savage & Baxter, 1995 †